fix: handle author as object in package.json

lib/oracle.js

@@ -3,6 +3,23 @@ const fs = require('fs');
 const path = require('path');
 const parseAuthor = require('parse-author');
 
+/**
+ * Normalize author to {name, email, url}
+ */
+function getAuthor (pkg) {
+  return (
+      typeof pkg.author === 'string'
+    ? parseAuthor(pkg.author)
+    : pkg.author && typeof pkg.author === 'object'
+    ? {
+        name: pkg.author.name,
+        email: pkg.author.email,
+        url: pkg.author.url,
+      }
+    : {}
+  );
+}
+
 /**
  * Reads file if it exists
  */
@@ -49,13 +66,13 @@ guessVersion (compilerWorkingDirectory) {
  * Tries to guess the author name from the package.json
  */
 guessDeveloperName (compilerWorkingDirectory) {
-  return parseAuthor(readPackageJson(compilerWorkingDirectory).author || "").name;
+  return getAuthor(readPackageJson(compilerWorkingDirectory)).name;
 },
 
 /**
  * Tries to guess the author URL from the package.json
  */
 guessDeveloperURL (compilerWorkingDirectory) {
-  return parseAuthor(readPackageJson(compilerWorkingDirectory).author || "").url;
+  return getAuthor(readPackageJson(compilerWorkingDirectory)).url;
 },
 };